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JP7044527B2 |
To lubricate between a pin boss part 23 for an upper pin and the upper pin 4 by using oil mist scattered in a crank case.A multi-link type piston crank mechanism of an internal combustion engine is composed of an upper link 3, a lower li...
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JP7028128B2 |
To provide a piston for an internal combustion engine capable of efficiently converting kinetic energy of an oil with a reciprocal motion of the piston within a cylinder into kinetic energy which moves from an inflow port to an outflow p...
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JP7021991B2 |
The present invention provides an internal combustion engine piston and a manufacturing method for an internal combustion engine piston which can secure durability and an adhesion property with a base material and achieve a low heat cond...
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JP7011433B2 |
To provide an engine component having a low thermal conductivity, a low specific heat, and a thermal insulation film excellent in heat resistance and mechanical strength, and a method of manufacturing the engine component.An engine compo...
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JP7015470B2 |
To provide a piston for an internal combustion engine capable of appropriately forming an oil film on an outer circumferential surface of a skirt of the piston.Pistons 1, 31, 41 for an internal combustion engine have two skirts 3 opposit...
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JP2022012439A |
To provide a combustion chamber structure of an engine capable of suppressing the occurrence of smoke due to fuel leakage from an injector.In a combustion chamber structure of an engine, an injector is disposed in the center of the lower...
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JP2022012438A |
To provide a combustion chamber structure of an engine capable of suppressing the occurrence of smoke due to fuel leakage from an injector.A combustion chamber structure of an engine comprises: a cylinder; a piston 5; a cylinder head wit...
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JP6992350B2 |
To provide a piston which can guide a liner-adhering oil to a back surface side of the piston in an intake process, can guide unburnt fuel to the back surface side of the piston, and can guide the liner-adhering oil to a slide clearance ...
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JP6993267B2 |
To provide an engine component of which a heat insulation layer has high heat insulation property and good adhesion property to a base material.The engine component includes the metal base material, and the heat insulation layer provided...
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JP6986994B2 |
To provide a method of manufacturing a piston, a piston material and the piston each of which allows for reduction of the cost of the piston.The method of manufacturing a piston includes: a material manufacturing step of manufacturing a ...
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JP6978584B2 |
This piston (1) for internal combustion engines has, on the outer peripheral side of a first skirt section (31): a first lubrication groove formation section (41) having a plurality of first grooves (410); and second lubrication groove f...
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JP6977985B2 |
To provide a piston for internal combustion engine which is excellent in heat-shielding and heat-radiating properties.A piston 1 for an internal combustion engine includes a heat-shielding flame-sprayed film 4 formed on a top surface 2, ...
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JP6971746B2 |
To provide an engine component having a low thermal conductivity, a low specific heat, and a thermal insulation film excellent in heat resistance and mechanical strength, and a method of manufacturing the engine component.An engine compo...
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JP2021179175A |
To suppress lowering of moving speed of a flame on a crown surface of a piston when a mirror-finished region is formed on the crown surface.A spark ignition type internal combustion engine includes a cylinder head and a piston. A crown s...
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JP2021173267A |
To provide an internal combustion engine which reliably diffuses a fuel injected to a combustion chamber to achieve good combustion.An internal combustion engine has: a piston 4 housed in a cylinder 3 in a manner that the piston 4 can re...
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JP2021173174A |
To provide a piston that can suppress damage of a heat insulation film and can improve the heat insulation property.A piston includes: a piston head including a groove to which a piston ring is fitted; a piston skirt extending from the p...
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JP2021167011A |
To provide a piston preforming body and a piston, in which a friction-resistant ring is caulked to a piston material with uniform, and high strength.MEANS FOR SOLVING THE PROBLEM: In a piston preforming body obtained by caulking and join...
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JP6952220B2 |
At least one of a pair of piston skirt parts (27) of a piston (25) for an engine has recesses (29) at both ends in the circumferential direction thereof, and the outer circumferential surface (28) of the piston skirt part (27) has a slid...
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JP6951180B2 |
To prevent variation in progression of warming-up upon introducing air for warming-up into an engine.A piston 8 of an engine 1 comprises: a communication passage 39 communicating between a crestal plane 8a facing a combustion chamber 9 a...
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JP6947025B2 |
A variable compression device of the present disclosure includes: a piston rod (6); a fluid chamber forming member (7a) which forms a portion of a fluid chamber (R3) configured to move the piston rod in a direction in which a compression...
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JP2021162030A |
To provide pistons of a wheel cylinder for a drum brake that improve polishing accuracy and housing efficiency.In each of pistons 5 of a wheel cylinder 4 for expanding a pair of brake shoes 3, one end part protruding from a cylinder body...
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JP2021156264A |
To provide a sliding component capable of realizing both improvement in abrasion resistance and strong bonding of a nitriding steel material and a lead-bronze alloy liner.A sliding component in which a nitriding steel material composed o...
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JP2021148083A |
To suppress adhesion of fuel to a convex part while maintaining the same effect as when fuel spray interferes with the convex part.A direct injection internal combustion engine comprises: a cavity 4 provided on a top surface 3 of a pisto...
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JP6936612B2 |
A piston for an internal combustion engine may include a shaft. A dual-layer coating with an inner layer and an outer layer may be applied to the shaft. The inner layer may include organic binders and solid lubricants. The inner layer ma...
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JP6935053B2 |
A mechanical part provided with an amorphous carbon coating (with at least 70 wt. % of carbon not including hydrogen) and used to cooperate slidingly with an antagonistic part having a surface hardness which is a maximum of two thirds of...
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JP2021131019A |
To provide a piston for an internal combustion engine that can provide low-heat conduction, and to provide a method for manufacturing a piston for an internal combustion engine.A piston includes a piston body 1a, a low-heat conductive la...
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JP6928734B2 |
The present invention provides a method for manufacturing a piston of a disc brake for a vehicle, wherein a corner portion between an outer peripheral end portion on an open end portion side and an open end portion is formed into a desir...
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JP6927057B2 |
A porous alumina layer with a sealer (i.e., a coating layer) is formed on a top surface or a piston (i.e., a second cavity surface and a second squish surface) and a surface of a bottom surface of a cylinder which forms a cavity area CA ...
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JP6918229B2 |
An upper member of a steel piston has a chemical composition which consists of, in mass %, C: 0.15 to 0.30%, Si: 0.02 to 1.00%, Mn: 0.20 to 0.80%, P: 0.020% or less, S: 0.028% or less, Cr: 0.80 to 1.50%, Mo: 0.08 to 0.40%, V: 0.10 to 0.4...
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JP6916082B2 |
To provide a piston supporting structure which suppresses the seizure of a piston pin and a connecting rod.A piston supporting structure includes: a piston 13 which has a pair of pin supporting holes opposite to each other; a connecting ...
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JP2021113505A |
To suppress generation of fuel that does not contribute to combustion in an engine having a piston with a top face on which a layer composed of porous alumina is formed while utilizing swing property of the layer.A piston includes a top ...
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JP6914434B2 |
The invention relates to a brake piston 1 for a brake caliper 9 of a disk brake, which is produced using working processes from a metallic material, in particular from a flat metal sheet, and is formed in one piece as a unilaterally open...
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JP2021102928A |
To provide a piston capable of suppressing oil leakage.A piston includes a piston head, and a piston skirt 46 connected to the piston head, and the piston skirt 46 has a plurality of wall portions 50 protruding outward from a surface of ...
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JP6904306B2 |
To provide an engine capable of effectively suppressing vibration of the engine even when a compression ratio of the engine is increased.A vibration transmission attenuation mechanism 50 disposed on a part of a load transmission member o...
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JP6904305B2 |
To provide an engine capable of effectively suppressing vibration of the engine even when a compression ratio of the engine is increased.A vibration transmission attenuation mechanism 50 disposed on a part of a load transmission member o...
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JP6897424B2 |
To provide a piston for an internal combustion engine which enables improvement of cooling efficiency of the piston.A piston 1 for an internal combustion engine includes: an annular cooling cavity 20 provided within a piston head 10; an ...
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JP6896040B2 |
To solve such a problem that aluminum adhesion to a piston ring may occur when an aluminum alloy is used as a piston material and a problem of wear of a piston ring groove.The problems are solved by a combination of a piston for an inter...
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JP2021095923A |
To provide a piston pin which can suppress peeling of a coating.A piston pin 4 for connecting a piston head and a con rod, includes a piston pin body 21, and a coating 22 covering a sliding surface of the piston pin body 21 between the p...
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JP6892550B2 |
A piston and cylinder arrangement is disclosed in which a field of spaced pockets is provided on the walls of a piston skirt and/or the cylinder to create a seal equivalent between the piston and the cylinder. The pockets may be provided...
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JP6890149B2 |
To provide a piston of an internal combustion engine that reduces unburned gas remaining between a side wall of the piston of the internal combustion engine and a cylinder and that improves fuel economy performance and emission performan...
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JP6879794B2 |
To inhibit processing costs of a cooling oil passage.An engine includes: a piston 21 including a first boss part 31 supporting one end part 22a of a piston pin 22, a second boss part 32 supporting the other end part 22b of the piston pin...
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JP6878340B2 |
To suppress degradation of heat efficiency.An engine 200 includes a cylinder, a piston housed in the cylinder, a combustion chamber facing the piston, a sliding portion (large diameter portion 114a) stroking integrally with the piston, a...
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JP6875795B2 |
To provide a piston for an internal combustion engine having excellent wear resistance and heat-resistant strength, and a method of manufacturing the same.The piston for an internal combustion engine is provided which is composed of an a...
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JP6878339B2 |
To suppress complication of a structure.An engine includes a cylinder, a piston housed in the cylinder, a combustion chamber facing the piston, a sliding portion (large diameter portion 114a) stroking integrally with the piston, a hydrau...
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JP2021076050A |
To provide a piston capable of controlling an increase in friction loss between the same and a cylinder.A piston 1 which reciprocates in a cylinder 3 of an engine 2 comprises: a piston ring mounting section 11; a skirt section 12 extende...
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JP6869155B2 |
A piston for an internal combustion engine includes a piston head portion, a pair of piston skirt portions, and a pair of side-wall portions. Each of the side-wall portions includes a pin boss portion having a piston pin hole, and is loc...
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JPWO2019225544A1 |
A large diameter portion (102) is formed on the outer peripheral portion of the piston band (62) on the side closer to the tip portion or the side far from the tip portion of the piston rod in a natural state before being arranged in the...
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JP6861217B2 |
The present invention relates to a tribological system (1; 2) comprising a first body (102; 105) and a second body (101; 107), which each form a component of an internal combustion engine (100), in particular a piston (102), a piston rin...
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JP2021050733A |
To provide readily accessible, simple and highly reliable mounting of a feed funnel in a feed opening for a cooling duct in a piston.A piston for an internal combustion engine (2) includes a cooling duct (3) having at least one feed open...
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JP2021046797A |
To provide a piston for an internal combustion engine having further improved durability and a method for manufacturing the piston for the internal combustion engine.In a piston for an internal combustion engine, a piston ring groove is ...
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